Characterization of the CLYC detector for neutron and photon detection

MCNPX-PoliMi was used to model the measurements performed with the CLYC detector, and MPPost was used to determine the light output distribution, convert 6Li neutron captures into light, and apply energy resolution. It was found that the modeling technique was capable of predicting 137Cs photon light output distributions for all light output greater than 200 keVee, and also to predict the same optimal polyethylene thickness as the measurement. Intrinsic neutron capture efficiency was estimated to be about 10%, which is a factor-of-5 improvement over an equivalent volume of 3He at a pressure of 10 atm.